Anton Kopylov
Software engineer
Fifteen years building web products, all remote. These days I build AI agents and the harness around them: production agents with tools, memory and evals; MCP servers and Claude plugins; a Ruby SDK for driving Codex; and the logging that shows what a model or an agent actually did. Rails, Postgres and AWS underneath, schema to deploy. Bitcoin on-chain data is a long-running side thread.
Projects
- Decibel Meternew — a sound level meter in the browser, dB(A) and Leq
- ExtensionDash — extension store ranks and competitors, served to your agent over MCP
- Stackpeek — the theme and apps behind any Shopify store
- Reverse Image Search Anywhere — four engines, one right-click
- BTC Indexer — Bitcoin on-chain metrics, with an MCP server
Open source
- llm_logs — LLM call tracing and prompt versions for Rails gem · 15k
- codex-ruby — drive the Codex CLI from Ruby gem · 2.9k
- mcp_logs — every MCP request your Rails app served gem · 1.5k
- dataforseo-ruby — a dependency-free DataForSEO client gem
- extensiondash-claude-plugin — ExtensionDash as a Claude plugin with skills
- stackpeek-extension, reverse-image-search-extension — the extension clients, MIT